Rozwiąż układ równań z 3 niewiadomymi
x+2y+3z=0
x+y+z=1
x+y-z=3
1. x+2y+3z=0
2.x+y+z=1
3.x+y-z=3
2.x=1-y-z
1.1-y-z+2y+3z=0 =>1+y+2z=0
3.1-y-z+y-z=3 =>-2z=2 =>z=-1
1.1+y+2*(-1)=0 =>1-2=-y =>y=1
2.x=1-1-(-1) => x=1
ponumerowalam rownania zeby bylo latwiej zrozumiec;)
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1. x+2y+3z=0
2.x+y+z=1
3.x+y-z=3
2.x=1-y-z
1.1-y-z+2y+3z=0 =>1+y+2z=0
3.1-y-z+y-z=3 =>-2z=2 =>z=-1
1.1+y+2*(-1)=0 =>1-2=-y =>y=1
2.x=1-1-(-1) => x=1
ponumerowalam rownania zeby bylo latwiej zrozumiec;)